Arizona is currently the only state that doesn't observe DST.

From http://webexhibits.org/daylightsaving/ (On page 2; click "Next.") "Daylight Saving Time, for the U.S. and its territories, is NOT observed in Hawaii, American Samoa, Guam, Puerto Rico, the Virgin Islands, most of the Eastern Time Zone portion of the State of Indiana, and the state of Arizona (not the Navajo Indian Reservation, which _does_ observe). Navajo Nation participates in the Daylight Saving Time policy, due to its large size and location in three states."

To cover Indiana more specifically (and thouroughly!).... "Indiana is one of three U.S. states which do not Spring ahead from "standard" to "daylight saving" time or Fall back from daylight to standard six months later. Arizona and Hawaii are the others. By State Law, most of Indiana is on Eastern Standard Time (EST) all year long. The statute creates three different time arrangements in the Hoosier State: 77 counties (including state capital Indianapolis) are in the Eastern Time Zone but do not change to Daylight time in April; instead they remain on Standard Time all year long; 10 counties -- five near Chicago, IL, and five near Evansville, IN, are in the Central Time Zone and use both Central Standard and Central Daylight; five other counties -- two near Cincinnati, OH, and three near Louisville, KY -- are in the Eastern Time Zone but use both Eastern Standard and Eastern Daylight. Many believe that Indiana changes time zones in the Summer. Part of the confusion stems from the fact that in the Winter, most of Indiana is the same time as New York (which is also Eastern), and in the Summer, Indiana is the same time as Chicago (which is Central). Actually, by going to Daylight time in April, the Central Zone Springs ahead from Standard to CDT, which is the same as Eastern Standard (Indiana time). By switching from Eastern Daylight (EDT) to Standard in October, the rest of the Eastern Zone Falls back to EST (Indiana time). Indiana, Arizona, and Hawaii are constants -- always Standard time." The above is quoted from http://webexhibits.org/daylightsaving/f.html, which in turn cites the Monroe County School Corporation, Bloomington, Indiana. Go Hoosiers! ;)

Hawaii does not observe Daylight Savings Time.

Arizona does not. While the rest of the nation goes temporarily insane, they continue on, minding their own business and flowing with the seasons as they always have.

Most of the Eastern portion of Indiana, but not all of the state......Arizona, w/the exception of the Navajo indian reservation, Guam, Hawaii, Puerto Rico, and American Somoa. Indiana did go to daylight savings time for a short time, but cancelled that late 2006.

Hawaii, Arizona, and Indiana. Indiana has 3 time zones. Not all parts of Indiana follow daylight savings.

Why are elephants Gray?

Hawaii is the only state that does not observe DLST at all, in any part of the state.

arizona doesn't observe daylight savings time.

Arizona has too much sunlight in the summer as it is and people are anxious for the sun to go down to cool things off, whereas Hawaii is in the tropics and has between 11 and 13 hours of sunlight year round so there's not much extra to save!

To Glamorgirl-NONE OF ARIZONA (with exception of Navajo Indian reservation) CHANGES TIME!! I think you need to do your research before commenting.